A hydraulic pump assembly

Abstract

The utility model discloses a hydraulic pump assembly, including a cylinder body, a pump housing and a valve body, wherein the two ends of the pump housing are respectively provided with an output end and an input end, the pump housing and the valve body are respectively connected and installed at the two ends of the cylinder body, a piston is slidably installed inside the cylinder body, a rotating disk is rotatably installed inside the pump housing, a motor is fixedly installed on the side wall of the pump housing, the output end of the motor is transmission-connected with the rotating disk, a connecting ring is fixedly installed on the side wall of the rotating disk, a connecting rod is transmission-connected between the rotating disk and the pump housing, one end of the connecting rod is fixedly connected with the piston, the other end of the connecting rod is rotationally connected with the connecting ring, and a plurality of first injection pipes are connected and installed on the top of the cylinder body. The utility model realizes that lubrication between the piston and the cylinder wall and between the connecting rod and the connecting ring can be simultaneously performed without disassembling the pump housing and stopping the operation of the pump body, thereby increasing the convenience of lubrication work.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pumps, in particular to a hydraulic pump component. Background Art

[0002] As the core power element of the hydraulic system, the hydraulic pump plays a key role in converting the mechanical energy of the prime mover into liquid pressure energy. Its working principle is based on the Pascal principle. Through the rotation or reciprocating motion of the internal rotor, gears, vanes or plungers, the volume of the pump chamber changes, thereby completing the process of oil suction and discharge. Hydraulic pumps are widely used in various hydraulic systems to provide the necessary power and control for various hydraulic functions. According to different structures, hydraulic pumps can be divided into many types, including gear pumps, vane pumps, plunger pumps and screw pumps, etc. Each type has its own unique working principle and scope of application.

[0003] The plunger pump is an important type of hydraulic pump. It relies on the reciprocating motion of the plunger in the pump cylinder to change the working volume of the pump chamber, thereby achieving oil suction and discharge. The plunger pump has the advantages of high pressure, wide adjustable flow range, high pressure and high temperature resistance, etc., so it is widely used in hydraulic systems that require high pressure, large flow and precise control. As an important member of the hydraulic pump family, the plunger pump plays an irreplaceable role in the field of hydraulic transmission and hydraulic control.

[0004] Patent document CN220979784U discloses a hydraulic plunger pump, including a pump body, a liquid inlet and a liquid outlet are provided on the pump body, a filter plate and a dredging plate are installed in the liquid inlet, the filter plate corresponds to the dredging plate, a fixing plate and a limit plate are fixed in the pump body, a piston is slidably fitted in the pump body, a rubber sealing pad is installed on the peripheral side of the piston, a motor is slidably fitted on the pump body, a circular plate is fixed on the output end of the motor, and the output end of the motor is fixed at the eccentric position of the circular plate. In the utility model, the filter plate and the dredging plate are installed in the liquid inlet, which can not only filter the solid impurities in the liquid and prevent the solid impurities from increasing friction, but also play a certain anti-backflow role, thereby ensuring the sealing performance, and the rubber sealing pad is installed on the peripheral side of the piston, which can prevent the piston from being rubbed while ensuring the sealing performance, and only the rubber sealing pad needs to be replaced during maintenance, thereby reducing the maintenance cost.

[0005] As in the prior art of the above patent, during the use of the hydraulic pump, friction will continue to occur between the piston and the cylinder wall, and between the connecting rod and the rotating disk, so these parts need to be lubricated regularly. However, in the prior art, when lubricating the inside of the pump body, it is usually necessary to disassemble the pump body shell, and then lubricate the cylinder wall and the end of the connecting rod respectively, and finally reinstall it. This process is not only cumbersome, but also easy to cause damage to the device. At the same time, since the device needs to be stopped during the lubrication process, this will also cause unnecessary downtime, affecting production efficiency and equipment utilization. Utility Model Content

[0006] The purpose of the utility model is to provide a hydraulic pump assembly to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydraulic pump assembly, including a cylinder body, a pump housing and a valve body, the two ends of the pump housing are respectively provided with an output end and an input end, the pump housing and the valve body are respectively connected and installed at the two ends of the cylinder body, a piston is slidably installed inside the cylinder body, a rotating disk is rotatably installed inside the pump housing, a motor is fixedly installed on the side wall of the pump housing, the output end of the motor is transmission-connected to the rotating disk, a connecting ring is fixedly installed on the side wall of the rotating disk, a connecting rod is transmission-connected between the rotating disk and the pump housing, one end of the connecting rod is connected to the piston The connecting rod is fixedly connected, and the other end of the connecting rod is rotatably connected to the connecting ring. The top of the cylinder body is connected and installed with a plurality of first injection tubes, and the tops of the plurality of first injection tubes are connected and installed with a connecting tube. The plurality of first injection tubes are arranged at one end close to the pump housing, so that when the piston is compressed to the position closest to the pump housing, the plurality of injection tubes are directly above the piston. The top of the pump housing is connected and installed with an injection groove, and a liquid infusion tube is connected and installed between the injection groove and the connecting tube, and a second injection tube is connected and installed between the pump housing and the injection groove, and the top of the injection groove is connected and installed with a material injection port.

[0008] As a further description of the above technical solution: a guide plate is fixedly installed inside the liquid injection tank, the guide plate is tilted, one end of the guide plate is arranged below the connection between the infusion tube and the liquid injection tank, and the other end of the guide plate is arranged directly below the injection port.

[0009] As a further description of the above technical solution: the outer sheath of the infusion tube is provided with a heat-insulating layer, and the bottom end of the heat-insulating layer and the top end of the pump housing are fixedly connected with a heat-conducting plate.

[0010] As a further description of the above technical solution: a sealing cover is threadedly installed on the top end of the injection port.

[0011] As a further description of the above technical solution: a sealing member is fixedly installed between the material injection port and the liquid injection groove.

[0012] As a further description of the above technical solution: a protective shell is fixedly installed on the outside of the injection tank and the multiple first injection tubes.

[0013] The utility model provides a hydraulic pump assembly. It has the following beneficial effects: when the device needs to be lubricated, the utility model injects lubricating liquid through the injection port at the top of the injection groove, a part of the lubricating liquid is input into the inside of the first injection tube through the connecting tube and the infusion tube, and the first injection tube then transports the lubricating liquid to the inner wall of the cylinder body, and when the piston is compressed to the position closest to the pump housing, the first injection tube can directly inject the lubricating liquid into the side wall of the piston from the top, and because the first injection tube is arranged at one end close to the pump housing, the end of the piston always maintains airtightness with the cylinder body, and the normal use of the piston will not be affected by the opening of the first injection tube, and a part of the lubricating liquid enters the inside of the pump housing through the second injection tube, when the rotating disk rotates, the connecting rod and the connecting ring just rotate to the bottom of the second injection tube, and the lubricating liquid can just lubricate the connecting rod and the connecting ring, and by injecting the lubricating liquid into the injection groove, it is realized that the piston and the cylinder wall and the connecting rod and the connecting ring can be lubricated at the same time without disassembling the pump housing and stopping the operation of the pump body, thereby increasing the convenience of lubrication work.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0015] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a hydraulic pump assembly proposed by the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-section three-dimensional structure of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the piston, connecting rod and rotating disk of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional explosion structure of the infusion tube, the connecting tube and the injection tank of the utility model;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the liquid injection tank of the utility model.

[0021] Legend:

[0022] 1. Pump casing; 2. Cylinder body; 3. Valve body; 4. Output end; 5. Input end; 6. Motor; 7. Rotating disk; 8. Connecting ring; 9. Connecting rod; 10. Piston; 11. First injection pipe; 12. Connecting pipe; 13. Infusion pipe; 14. Insulation layer; 15. Injection tank; 16. Second injection pipe; 17. Injection port; 18. Seal; 19. Guide plate; 20. Sealing cover; 21. Heat transfer plate; 22. Protective shell. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-5A hydraulic pump assembly comprises a cylinder body 2, a pump housing 1 and a valve body 3, wherein the two ends of the pump housing 1 are respectively provided with an output end 4 and an input end 5, the pump housing 1 and the valve body 3 are respectively connected and installed at the two ends of the cylinder body 2, a piston 10 is slidably installed inside the cylinder body 2, a rotating disk 7 is rotatably installed inside the pump housing 1, a motor 6 is fixedly installed on the side wall of the pump housing 1, the output end 4 of the motor 6 is transmission-connected to the rotating disk 7, a connecting ring 8 is fixedly installed on the side wall of the rotating disk 7, a connecting rod 9 is transmission-connected between the rotating disk 7 and the pump housing 1, one end of the connecting rod 9 is fixedly connected to the piston 10, and the other end of the connecting rod 9 is rotationally connected to the connecting ring 8, the top end of the cylinder body 2 is connected to the A plurality of first injection pipes 11 are installed in the pump housing 1, and the top ends of the plurality of first injection pipes 11 are connected and installed with a connecting pipe 12. The plurality of first injection pipes 11 are arranged at one end close to the pump housing 1, so that when the piston 10 is compressed to the position closest to the pump housing 1, the plurality of injection pipes are directly above the piston 10. A liquid injection groove 15 is connected and installed at the top end of the pump housing 1, and a liquid infusion pipe 13 is connected and installed between the liquid injection groove 15 and the connecting pipe 12. A second liquid injection pipe 16 is connected and installed between the pump housing 1 and the liquid injection groove 15, and a material injection port 17 is connected and installed at the top end of the liquid injection groove 15; the cylinder body 2, the piston 10, the pump housing 1 and the valve body 3 are all prior art, and their function is to drive the rotation of the motor 6 to rotate the pump housing 1 The rotating disk 7 rotates, and under the action of the connecting rod 9, the piston 10 reciprocates inside the cylinder body 2, and then the liquid enters the valve body 3 through the input end 5, and then is discharged from the valve body 3 through the output end 4, realizing the pumping of the liquid, so it is not described in detail. When it is necessary to lubricate the device, the lubricating liquid is injected through the injection port 17 at the top of the injection groove 15, and a part of the lubricating liquid is input into the first injection pipe 11 through the connecting pipe 12 and the infusion pipe 13. The first injection pipe 11 then transports the lubricating liquid to the inner wall of the cylinder body 2, and when the piston 10 is compressed to the position closest to the pump housing 1, the first injection pipe 11 can directly inject the lubricating liquid into the side wall of the piston 10 from above, and because The first injection pipe 11 is arranged at one end close to the pump housing 1, and the end of the piston 10 always maintains air-tightness with the cylinder body 2, and the opening of the first injection pipe 11 will not affect the normal use of the piston 10. A part of the lubricating liquid enters the interior of the pump housing 1 through the second injection pipe 16. When the rotating disk 7 rotates, the connecting rod 9 and the connecting ring 8 just rotate to the bottom of the second injection pipe 16, and the lubricating liquid can just lubricate the connecting rod 9 and the connecting ring 8. By injecting the lubricating liquid into the injection groove 15, it is possible to lubricate the piston 10 and the cylinder wall and the connecting rod 9 and the connecting ring 8 at the same time without disassembling the pump body casing or stopping the operation of the pump body, thereby increasing the convenience of lubrication work.

[0025] As a preferred technical solution of this embodiment, a guide plate 19 is fixedly installed inside the injection groove 15, and the guide plate 19 is arranged at an angle. One end of the guide plate 19 is arranged below the connection between the infusion tube 13 and the injection groove 15, and the other end of the guide plate 19 is arranged directly below the injection port 17; the setting of the guide plate 19 can separate the lubricating liquid injected through the injection port 17, one part of which is used to lubricate the connecting rod 9 inside the pump housing 1, and another part is used to lubricate the piston 10 inside the cylinder body 2.

[0026] As a preferred technical solution of this embodiment, the outer part of the infusion tube 13 is provided with an insulation layer 14, and the bottom end of the insulation layer 14 and the top end of the pump housing 1 are fixedly connected with a heat conducting plate 21; when the external working environment temperature is low, the lubricating liquid is easily solidified or becomes viscous under the influence of temperature during the process of being transported through the infusion tube 13, and the heat conducting plate 21 can transfer the heat generated by the internal operation of the pump housing 1 to the surface of the infusion tube 13 inside the insulation layer 14, so that solidification and blockage will not occur during the process of transporting the lubricating liquid.

[0027] As a preferred technical solution of this embodiment, a sealing cover 20 is installed on the top thread of the injection port 17; when lubrication operation is not required, the sealing cover 20 can seal the injection port 17 to prevent external dust from entering the liquid injection tank 15 through the injection port 17.

[0028] As a preferred technical solution of this embodiment, a seal 18 is fixedly installed between the injection port 17 and the liquid injection groove 15; the setting of the seal 18 can increase the sealing performance between the injection port 17 and the liquid injection groove 15 to prevent the lubricating liquid from leaking inside the liquid injection groove 15.

[0029] As a preferred technical solution of this embodiment, a protective shell 22 is fixedly installed on the outside of the liquid injection groove 15 and the multiple first liquid injection tubes 11; the setting of the protective shell 22 can be used to protect the liquid injection groove 15 and the first liquid injection tubes 11, prevent the liquid injection groove 15 and the multiple first liquid injection tubes 11 from being damaged by the outside world, and increase the protection performance of the device.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic pump assembly, comprising a cylinder body (2), a pump housing (1) and a valve body (3), wherein the two ends of the pump housing (1) are respectively provided with an output end (4) and an input end (5), the pump housing (1) and the valve body (3) are respectively connected and installed at the two ends of the cylinder body (2), a piston (10) is slidably installed inside the cylinder body (2), a rotating disk (7) is rotatably installed inside the pump housing (1), a motor (6) is fixedly installed on the side wall of the pump housing (1), the output end (4) of the motor (6) is transmission-connected to the rotating disk (7), a connecting ring (8) is fixedly installed on the side wall of the rotating disk (7), a connecting rod (9) is transmission-connected between the rotating disk (7) and the pump housing (1), one end of the connecting rod (9) is fixedly connected to the piston (10), and the other end of the connecting rod (9) is rotationally connected to the connecting ring (8), characterized in that: A plurality of first injection tubes (11) are connected and installed at the top end of the cylinder body (2), and a connecting tube (12) is connected and installed at the top ends of the plurality of first injection tubes (11). The plurality of first injection tubes (11) are arranged at one end close to the pump housing (1), so that when the piston (10) is compressed to the position closest to the pump housing (1), the plurality of injection tubes are located directly above the piston (10). A injection groove (15) is connected and installed at the top end of the pump housing (1), and a liquid infusion tube (13) is connected and installed between the injection groove (15) and the connecting tube (12). A second injection tube (16) is connected and installed between the pump housing (1) and the injection groove (15), and a material injection port (17) is connected and installed at the top end of the injection groove (15).

2. A hydraulic pump assembly according to claim 1, characterized in that: A guide plate (19) is fixedly installed inside the liquid injection groove (15). The guide plate (19) is arranged at an angle. One end of the guide plate (19) is arranged below the connection between the liquid infusion tube (13) and the liquid injection groove (15), and the other end of the guide plate (19) is arranged directly below the injection port (17).

3. A hydraulic pump assembly according to claim 1, characterized in that: The exterior of the infusion tube (13) is provided with a heat-insulating layer (14), and a heat-conducting plate (21) is fixedly connected between the bottom end of the heat-insulating layer (14) and the top end of the pump housing (1).

4. A hydraulic pump assembly according to claim 1, characterized in that: The top end of the injection port (17) is threadedly mounted with a sealing cover (20).

5. A hydraulic pump assembly according to claim 1, characterized in that: A sealing member (18) is fixedly installed between the material injection port (17) and the liquid injection groove (15).

6. A hydraulic pump assembly according to claim 1, characterized in that: A protective shell (22) is fixedly mounted on the outside of the liquid injection tank (15) and the plurality of first liquid injection pipes (11).

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